大小叶片压气机平面叶栅试验研究
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics（2006）
Abstract
本文对大小叶片平面叶栅流动进行了详细的测量,初步分析了大小叶片设计优化规律.大叶片叶栅稠度1.3,小叶片尾缘与大叶片尾缘齐平且位于两大叶片尾缘正中.来流气流马赫数0.3,相应的基于大叶片弦长的雷诺数为7×105.测量结果显示:小叶片的存在降低了大叶片负荷,增强了大叶片抵抗分离的能力;随着攻角的增大,大叶片负载增大,而小叶片负载反而降低;大小叶片叶栅的落后角基本不随来流攻角变化,传统的落后角经验公式将不再适用.
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Key words
Flow measurement,Planar cascade,Pneumatic probe,Splitter compressor,Surface pressure measurement
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